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A kind of preparation method of novel ptfe coated glass fiber filter material

A filter material and glass fiber technology, which is applied in the field of preparation of new PTFE-coated glass fiber filter material, can solve the problems of increasing the running resistance of the dust collector, low air permeability of the film-coated filter material, and unsatisfactory dust removal effect, etc., to achieve Excellent thermal stability and chemical stability, small resistance, good cleaning effect

Active Publication Date: 2019-11-22
辽宁凯富环保科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the filter material is treated with a film coating agent, the associated membrane is distributed throughout the surface of the filter felt in a three-dimensional space structure, and the air permeability of the filter material is 8-12m 3 / m 2 Min, the air permeability of the film-coated filter material prepared by this method is also small, the air permeability is not good, the dust removal effect is not ideal, and it will increase the running resistance of the dust collector

Method used

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  • A kind of preparation method of novel ptfe coated glass fiber filter material

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Effect test

Embodiment 1

[0033] A kind of preparation method of PTFE coating glass fiber filter material, comprises the following steps:

[0034] (1) The synthetic fiber needle-punched felt filter material to be coated is placed in an impregnating tank, soaked in an impregnating agent for impregnating treatment, and the impregnating agent is composed of the following raw materials according to mass percentage: polytetrafluoroethylene 20% (solid content 60wt%), 6% acrylic acid resin, 0.8% silane coupling agent, 0.7% lead acetate, and the balance is demineralized water;

[0035] (2) Place the impregnated synthetic fiber needle felt filter material in an oven for drying. The oven is divided into a pre-drying chamber and a baking chamber. The filter material first enters the pre-drying chamber, and the pre-drying chamber The drying temperature of the chamber is 90°C, the speed is 3m / min, and the cloth storage is 45m. The temperature of the chamber is 260°C, and the storage cloth is 35m. In this temperatu...

Embodiment 2

[0047] (1) The glass fiber woven filter material to be coated is placed in the dipping tank, soaked in the impregnating agent for impregnating treatment, and the impregnating agent is composed of the following raw materials according to mass percentage: polytetrafluoroethylene 40% (solid Content 60wt%), acrylic acid resin 6%, silane coupling agent 1.5%, lead acetate 1.0%, balance is demineralized water;

[0048] (2) Place the impregnated glass fiber woven filter material in an oven for drying. The oven is divided into a pre-drying chamber and a baking chamber. The filter material first enters the pre-drying chamber, and the pre-drying chamber The drying temperature of the chamber is 120°C, the speed is 5m / min, and the cloth storage is 45m. The temperature of the chamber is 260°C, and the storage cloth is 35m. In this temperature zone, the chemical raw materials are solidified in the filter material; after drying, a large-diameter white steel roller is used to cool the high-tem...

Embodiment 3

[0060] (1) The composite needle-punched felt filter material to be coated is placed in an impregnating tank, soaked in an impregnating agent for impregnating treatment, and the impregnating agent is composed of the following raw materials in terms of mass percentage: polytetrafluoroethylene 30% (solid content 60wt%), 6% of acrylic acid resin, 1.0% of silane coupling agent, 0.5% of lead acetate, and the balance is demineralized water;

[0061] (2) Place the impregnated glass fiber woven filter material in an oven for drying. The oven is divided into a pre-drying chamber and a baking chamber. The filter material first enters the pre-drying chamber, and the pre-drying chamber The drying temperature of the room is 100°C, the speed is 4m / min, and the cloth storage is 45m. The temperature of the chamber is 270°C, and the storage cloth is 35m. In this temperature zone, the chemical raw materials are solidified in the filter material; after drying, a large-diameter white steel roller ...

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Abstract

The invention is suitable for the technical field of dust removal filtering materials, provides a preparation method for a novel PTFE coated glass fiber filter material, and solves the technical problems that in the prior art the air permeability of glass fiber filtering materials is too small or too large, and the glass fiber filtering materials are not suitable for the use of filtering and dust removal devices. The preparation method provided by the invention comprises performing soaking on glass fiber materials, performing drying, performing cooling and calendaring, performing coating by using a coating liquid, performing drying, and performing cooling and calendaring to obtain a final product. The PTFE coated glass fiber filter material prepared by the preparation method provided by the invention fills in the blank of air permeability of filtering materials in a stage of 85-160 mm / s, and the Kaifute coated filtering material has a smooth surface which has extremely strong hydrophobicity, has an extremely good dust removal property, has low resistance and high efficiency, has good heat stability and chemical stability, and especially has good dust removal effect on both moisture containing dust and dust with large inert viscosity. The glass fiber filter material prepared by the preparation method meets the requirements of fuel gas and dust emission standard for environmental protection in a certain later period, and increasingly strict rules of environmental protection.

Description

technical field [0001] The invention belongs to the technical field of dust removal filter materials, and relates to a preparation method of a novel PTFE-coated glass fiber filter material. Background technique [0002] The existing glass fiber filter materials circulating in the domestic and foreign markets are usually "deep filter", that is, through the capture of filter material fibers, a "primary dust layer" (ie powder cake) is formed on the surface of the filter material, and then through this layer of powder cake To filter the subsequent dust, the air permeability of the conventional "deep filter" glass fiber material is between 200-600mm / s. Due to the high air permeability, the dust will pass through the filter material along the flow of the gas, which cannot meet the environmental protection dust emission standard 30mg / N·m 3 , and under long-term use conditions, the dust will block the pores of the filter material, making the filter material lose its filtering effec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14D06M15/256D06M11/01D06M15/263D06M13/188D06N3/00D06N3/04
CPCB01D39/14B01D2239/10D06M11/01D06M13/188D06M15/256D06M15/263D06N3/0006D06N3/0011D06N3/0022D06N3/0077D06N3/042D06N2211/30
Inventor 李树凯
Owner 辽宁凯富环保科技集团有限公司